Boris Johnson has waded into the escalating trade row between the US and China, saying he wants to see tariffs removed.

Speaking to reporters en route to the G7 summit in Biarritz, the British prime minister said he was “very, very concerned” about the tit-for-tat conflict between the US and China. The two countries have imposed tariffs on a swath of each other’s imports, as the White House accuses Beijing of unfair competition, and China retaliates.